Floor box



' employed in housing electrical. outlets placed Patented Mar. 19,1929. i

- eer-Ebfi ms,

HAROLD, G. im'x'rrm, or BALD IN, mwaona xssm TO WESTINGHO SE ELno 'rgmto & MANUFACTURIHG- o0ivr1 ANY,. ooRroaArioN 'QF'BENNSYLYANIA.

' rtoon Box. Y i

. Applioation filed s ptemterfz ig 1920. Serial No. 412,559..

invention relates to floor .boxes and particularly tothe terminal Zboxes commonly in floors of buildings.

An object of my invention to p rovidea' floor-box construction, wherein; the crown or tached to the box that its upper face isfiush with the floor regardless of misalignment of the box and its. elevation with respect to the level of, thefioor.

Another object is to provide a box-con;

struction j having the above characteristics wherein an adjustable support is provided for supporting the cover or crown in proper position with respect to. the fioor-and'which may be removed after the sealing or cementing agent has been applied or has hardened.

A further object is to provide a box construction wherein the supporting member for supporting the crown member during the grouting operation serves to close the space,

between themembers and prevent the escape of the plastic or liquid cementing agent.

I Heretofore, boxes have been made with an annular groove in'their upper edge adapted to receive an annular tongue projecting downwardly from thecrownmember. The space between thetongue and the walls of the groove is filled with a cementitious material which is usually applied in a plastic and which subsequently or liquid state hardens.

In such devices, the crown is supported by the annular tongue which engagesthe bottom of the groove and, consequently, if the box is located permanently in a. tilted positiomor in a position beneath the proper-elevation thereof with respectto the floor, the crown or cover is supported-in a correspondingly misplaced position with respect to-the floor level. It is very difficult to so properly position the box that. the crown will be flush with the floor level when supported upon the box, and an object of? my invention is to thereon, the top face of-the box is flush with the floor level. These and other objects that W111 a m apparent throughout the'further description of the invention are attained bymeans of the fioor-box construction herein described and;

Figure l'isaplan view showingjthe '7' proved boxfconstruction; and

. Fig. 2 is a vert cal sect on on the line TI II of Fig. 1. 7 cover member may be so"permanently atincludes: a cylindrical box member 3 having;

a closedv bottom 4 and outlets 5 (one of'which is shown) through which the conductor terf usual practice is to secure, the 'box to vthe minals (not shown) enter thebox. The.

conductorfconduit which serves to support the-box in a permanent position in whichthe box registers with a suitable opening provided in the floor and wherein the topof the box is positioned a short distance beneath the floor level. v

The upper portion of the box is provided with exterior annular ridges 6,-and a cylindricalcover or crown 7 is telescoped over the ridged portion and isprovided with interior annular ridges 8' correspondingwith those on the box. As the crown member telescopes loosely overthe box member, sufficientspace is provided therebetween to permituniversal adjustment of the cover with respect to the" box. That is, the longitudinal a'xes of the box and cover may be disposed at an angle to one another or the crown may be adjusted longi: tudinally of the box. The crown member is open at both ends and is provided with inwardly-directed lugs 9 that are tapped to receive the screws lOwhich serve to secure the a cap 11 to the crown.

The interior ofv the box is providedwith a bracket 12 upon which anystandard form of plug receptaclemay be mounted, suclnfor instance, as the receptacle 13 that is adapted to receive a plug 14. The cap ll'is provided with a bell-shaped housing that may be screwed on or ofithe cap when adjusting the plug. The crown 7 ispermanently secured to the box 3 after the box has been permanently located in the floor structure, by means of a hardening material, such as cementlfi that is appliedto the space between the box and the cover while ina plastic or semi-liquid state. Durmg the cementing operat1on,an

elastic band 17 preferably made of'rubber and having a circular cross-section, isslipped over the housing 'and'so adjusted thereon that, when the cover is supported thereupon and is" i l COIltact with .th b d r g ut the Referring to the drawing, the apparatus v the opening in the crown member.

entire periphery of the lower end thereof, the top faceof the crown or cover is flush with the floor level. The'bandserves as a supporting member and as a sealing member for so closing the lower end of the space between the box and crown member that the cementitious material is retained while it is being applied at the upper edge of the box member through After the cement has been grouted in the space between the box and crown members and has hardened,

" the band 17 may be removed for reuse by so ex andin it that it ma be sli 3 ed u Y b v wardly over the crown member.

The construction is extremel sim ale and the elastic band used for supporting the crown apparent tothose skilled in the art that various changes, modifications, additions, substitutions and" omissions maybe made in the able with respect thereto and adapted tov be permanently retained inadjusted position-by a hardening agent disposed between the telescoped sections of the members',- of" anexpansible band adj ustablymounted upon the box member for supporting the crown mem- 40 berand closingthe space-between 1t and theother member while the said agent-isbeing applied and adapted to-be expanded for removal over the said crown'member.

In testimony whereof, Ihave hereunto subscribed my name this seventeenth day of September, 1920.

HAROLD G. BrHCIER;- 

